Valve.



D. S. RYAN.

VALVE.

APPLlcATioN FILED DEc.6.1911.

1,284,465. Patented N0v.12,1918.

f 41 f//f//fA///// 5 7 @uvm @u GHMML DAVID S. RYAN, 0F TORONTO, ONTARIO,CANADA.

VALVE.

Specification of Letters Patent.

Patented Nov. 12, 191,8.

r Application led December G, 1917. Sera1No.205,855.

To all whomc't may concern:

Be it known that I, DAVID S. RYAN, of the city of Toronto, in the countyof York, in the Province of Ontario, in the Dominion of Canada,prospector, have invented certain new and useful Improvements in Valves,and do hereby declare that the following is a full, clear, and exactdescription of same.

This invention has for its object to provide for the controlling offluid under an intermittent pressure to be admitted to a plurality of'receivers or devices in which it is desirable that a maximumpredetermined pressure shall be attained in a consecutive order in suchreceivers or devices, the operation of such means to be automaticinefegting such selective pressure distribution without requiringmechanical assistance or involving the use of mechanical timingarrangements.

A further object is to provide a combined valve having a plurality ofpassages therein for Huid circulation, the said passages being isolatedone from another by pressure-operable means, whereby the operation ofsaid last-mentioned means due to pressure in one of' the said passages,may effect the closing of the adjacent passage to prevent fluidcirculation therethrough.

Further objects subsidiary to or resulting from the aforesaid mainobjects, or from the construction of the invention as it may be carriedinto effect, will become apparent as the nature of the said invention ishereinafter further disclosed.

In carrying the said invention into effect, I may provide within asuitable casing two expansible chambers, such as short lengths ofsubstantially flexible tubing, each connected at opposite ends to inletand outlet pipes or conduits extending from the said casing, the saidexpansible chambers being arranged one above the other and in contact,and occupying a restricted space within the casing in such manner thatthe expansion of one of the said chambers will result in the pressingtogether of the walls of the said chambers, closing, or more or lessclosing, the same, according to the difference in the pressure in eachof the said chambers. In such a construction, the outlet pipe from oneof the said chambers may bek connected with a receiver in which it isdesired a certain pressure shall be primarily attained, and the saidreceiver also connected with the inlet pipe of the other of the saidchambers, the outlet pipe of which is connected with a second receiver,whereby-the restriction or closing of the second expansble chamber, dueto the inflation of the first chamber while fiuid under pressure isbeing admitted to the first-mentioned receiver, will prevent thecharging of the second receiver until such time as the pressure in thefirst receiver shall have risen to a sufficient and predetermined extentto cause the expansion ofl the second chamber against the e'ort of therst chamber, all of which is more particularly described and ascertainedin and by the following statement having reference to the examples shownin the accompanying drawing, in which Figure l is a diagrammatical viewof a valve embodying this invention coupling a pair of receivers:

Fig. 2 is a vertical section of such a valve taken on the line 2"- Fig.l.

Fig. 3 is a similar view to Fig. 2 showing the valve in a differentstage of its operation.

Similar characters ofy reference indicate similar parts in the severalfigures of the drawing.

In Fig. l, a and indicate the receivers or kany devices in whichintermittent and consecutive pressure is desired, in this example itbeing presumed that a certain presT sure is to be attained in thereceiver a prior to the admission of fluid under pressure to thereceiver b, and l indicates a valve casing provided with primary inletand outlet pipes 2 and 3 and with secondary inlet and outlet pipes 4 and5 respectively, the pipe 3 being connected with the receiver a and thepipe 2 with the source of fluid under pressure, while the secondaryinlet 4 is l also connected with the receiver a and the outlet 5 withthe receiver b. 6 is an expansible chamber connecting the parts 2 and 3,and said chamber in the example shown in Figs. 1, 2 and 3 comprising aflexible tube, preferably of a substantially fiat cross section, asindicated in Fig. 2, and 7 is a similar expansible chamber connectingparts 4 and 5, and being arranged within a restricted space 8 with thesaid chamber 6, the two chambers being thereby in lateral contact. Itwill be seen that upon admitting fiuid Linder pressure to the receiver athrough the expansible chamber 6, said chamber will be inflated withinthe restricted space 8 in the casing, and will consequently press thewalls of the chamber 7 to gether, as indicated in Fig. 2, so that fluidwill be enabled to pass through the said chamber 7 from the receiver a,until such time as the pressure therein has increased t0 a predeterminedextent to overcome the resistance of the chamber 6 to the opening of thesaid chamber 7, whereupon the said chamber 7 will be inflated againstthe pressure of the chamber 6, as is indicated in Fig. 8, and the fluidadmitted to the receiver b is required.

It will be readily understood that the designing of the valve can beeasily arranged to determine the pressure at which the chamber 7 willoperate, such as the proportioning of the respective areas of the saidchambers or the inlets to the same, and so on; and it will also beunderstood that where the fluid pressure admitted to the chamber 8 isintermittent upon the relief oi' such pressure after the charging of thesaid receivers, said receivers will discharge through the said valve inconsecutive order due to the operation of the said chambers in themanner already described.

This invention may be developed within the scope of the following claimswithout departing from the essential features of the said invention, andit is desired that the specification and drawing be read as being merelyillustrative and not in a limiting sense except as necessitated by theprior art.

llVhat I claim as my invention is l. In a device of the class described,a primary conduit, having inlet and outlet portions, a secondary conduitalso having inlet and outlet portions, the inlet portion Copies of thispatent may be obtained for of said secondary conduit being adapted toreceive iiuid under pressure from the outlet conduit of said primaryconduit, an eX- pansible chamber in said primary conduit, and a furtherexpansible chamber in said secondary conduit, said chambers beingcooperative, whereby pressure in the chamber of said primary conduitwill eifect the closing of the chamber in said secondary conduit tofluid passage therethrough, and whereby said chamber in said secondaryconduit will be expanded against the effort of said first mentionedchamber upon the pressure within the outlet portion of said primaryconduit having attained a degree overcoming the effort of saidprimaryconduit chamber.

2. In combination with a pair of receivers, a primary conduit leading toone of said receivers, a secondary conduit leading from such receiver tothe second of said receivers, an expansible chamber in said primaryconduit, and a further expansible chamber in said secondary conduit,said chambers being cooperative, whereby pressure in the chamber of saidprimary conduit will effect the closing of the chamber in said secondaryconduit to the passage of iiuid therethrough, and whereby said chamberin the secondary conduit will be expanded against the effort of saidfirst-mentioned chamber upon the pressure within said first-mentionedreceiver having attained a degree overcoming the effort of said primaryconduit chamber.

Signed at the city of Toronto, in the county of York, in the Province ofOntario, in the Dominion of Canada, this 30th day of November 1917.

DAVID s. RYAN.

ve cents each, by addressing the Commissioner of Patents,

Washington, D. C.

